Silvastus hamelia



(No Model.)

S. HAMBLIN. FILE CUTTING MACHINE.

No. 309,458. Patented Dec. 16, 1884.

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SILVANUS HAMBLIN, OF PLYMOUTH, MASSACHUSETTS, ASSIGNOR TO THE STANDARDFILE COMPANY, OF SAME PLACE.

FlLE=CUTTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 309,458, dated December16, 1884; Application filed November 16, 1883. (N model.)

To all whom, it iii/toy cancer/t:

Be it known that I, SILvANUs HAMBLIN, a citizen. of the United States,residing at Plymouth, in the county of Plymouth, in the State ofMassachusetts, have invented a new and useful File-0utting Machine, ofwhich the :following is a specification.

My invention relates to improvements in file-cutting machines in whichdiagonal cams t operate in conjunction with a diagonal gear; and theobjects of my invention and improve ment are, first, to provide anintermittent motion of the slide holding the file-blank; second, toafford facilities for the proper ad- 1 justment of the movement of theslide; and, third, to hold the iile-blank motionless and firmly in placeat the exact point of time when it.- receives the blow of the chisel orcut-. tcr. I attain these objects by the mechanism illustrated in theaccoin ianying drawings, in

which Figure l is a perspective view of the entire machine as it appearsafter the removal of the column, and Fig. 2 a view of the slide forholding the file-blank.

Similar letters refer to similar parts in both views.

Ais a bed or block, forming a solid foundation for supporting theoperating mechanism.

0 c c are standards for supporting the shaft 1. This shaft has adiagonal cam, E, fastened upon it, matching into the diagonal gear G,fastened upon screw F, the latter matching into the half-nut O, securedto the slide H.

5 The latter is for holding the file-blank, which is secured in theslide by springs (Z and b, as shown in Fig. The shaft I can be turned byhand or power, as desired. \V hen the shaft is turned, the diagonal camE is caused to revolve, and during its progress it inter- 4o sects withdiagonal gear G, causing the gear fastened to the screw F to turn thescrew, and the screw being matched into the half-nut O, fastened to theslide H, the slide is caused to move in unison with the other parts, themovement of the slide being graduated by the number of teeth upon thegear G.

I) l) are columns for holding and guiding the hammer 13. Upon the shaftI is fastened a cam, O, for raising the hammer B, (the lat- 0 terholding the chisel or cutter,) the earn 0 being at a right angle withcam E. The file blank, secured in slide H, is moved at intervals,between the blows of the cutter t, and by the operation of the cam E andgear G the 5 file-blank is perfectly stationary while receiv- .ing theblow of the cutter Z, and while the cutter is raised for the next blowthe blank moves forward (as described above) for the next tooth to beout. By this movement be tween the blows, and by being held stationaryto receive the blow, a better tooth is formed than where the feed ormovement of the blank is continuous, the tooth thus formed by thismachine being superior to that cut by any other method, hand orotherwise.

What I claim as my invention, and desire to secure by Letters Patent, is

The herein-described combination of mechanism, consisting of diagonalcam E, diago- 7o nal gear t}, with screw F, and nut O, fitted to slideH, all substantially as set forth, which is exactly adapted to attainthe objects sought.

S ILVANUS HAMBLIN. Witnesses:

S. M. HAMBLIN, HENRY E. Swirr.

